Examples of org.w3c.css.sac.LexicalUnit

org.w3c.css.sac.LexicalUnit
This is a lexical unit for CSS values.
Remarks: Not all the following lexical units are supported (or will be supported) by CSS.
All examples are CSS2 compliant. @version $Revision: 1.3 $ @author Philippe Le Hegaret

     */
    protected LexicalUnit parsePropertyValueInternal() 
  throws CSSException, IOException {
        nextIgnoreSpaces();
        
        LexicalUnit exp = null;


        try {
            exp = parseExpression(false);
        } catch (CSSParseException e) {
            reportError(e);

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            if (nextIgnoreSpaces() != LexicalUnits.COLON) {
                throw createCSSParseException("colon");
            }
            nextIgnoreSpaces();
        
            LexicalUnit exp = null;
            
            try {
                exp = parseExpression(false);
            } catch (CSSParseException e) {
                reportError(e);

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    /**
     * Parses a CSS2 expression.
     * @param lex The type of the current lexical unit.
     */
    protected LexicalUnit parseExpression(boolean param) {
        LexicalUnit result = parseTerm(null);
        LexicalUnit curr = result;


        for (;;) {
            boolean op = false;
            switch (current) {
            case LexicalUnits.COMMA:

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     */
    protected LexicalUnit parseFunction(boolean positive, LexicalUnit prev) {
        String name = scanner.getStringValue();
        nextIgnoreSpaces();
        
        LexicalUnit params = parseExpression(true);


        if (current != LexicalUnits.RIGHT_BRACE) {
            throw createCSSParseException("token",
                                          new Object[] { new Integer(current) });
        }
        nextIgnoreSpaces();


        predefined: switch (name.charAt(0)) {
        case 'r':
        case 'R':
            LexicalUnit lu;
            if (name.equalsIgnoreCase("rgb")) {
                lu = params;
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_INTEGER:
                case LexicalUnit.SAC_PERCENTAGE:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_OPERATOR_COMMA:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_INTEGER:
                case LexicalUnit.SAC_PERCENTAGE:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_OPERATOR_COMMA:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_INTEGER:
                case LexicalUnit.SAC_PERCENTAGE:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu != null) {
                    break;
                }
                return CSSLexicalUnit.createPredefinedFunction
                    (LexicalUnit.SAC_RGBCOLOR, params, prev);
            } else if (name.equalsIgnoreCase("rect")) {
                lu = params;
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_INTEGER:
                    if (lu.getIntegerValue() != 0) {
                        break predefined;
                    }
                    lu = lu.getNextLexicalUnit();
                    break;
                case LexicalUnit.SAC_IDENT:
                    if (!lu.getStringValue().equalsIgnoreCase("auto")) {
                        break predefined;
                    }
                    lu = lu.getNextLexicalUnit();
                    break;
                case LexicalUnit.SAC_EM:
                case LexicalUnit.SAC_EX:
                case LexicalUnit.SAC_PIXEL:
                case LexicalUnit.SAC_CENTIMETER:
                case LexicalUnit.SAC_MILLIMETER:
                case LexicalUnit.SAC_INCH:
                case LexicalUnit.SAC_POINT:
                case LexicalUnit.SAC_PICA:
                case LexicalUnit.SAC_PERCENTAGE:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_OPERATOR_COMMA:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_INTEGER:
                    if (lu.getIntegerValue() != 0) {
                        break predefined;
                    }
                    lu = lu.getNextLexicalUnit();
                    break;
                case LexicalUnit.SAC_IDENT:
                    if (!lu.getStringValue().equalsIgnoreCase("auto")) {
                        break predefined;
                    }
                    lu = lu.getNextLexicalUnit();
                    break;
                case LexicalUnit.SAC_EM:
                case LexicalUnit.SAC_EX:
                case LexicalUnit.SAC_PIXEL:
                case LexicalUnit.SAC_CENTIMETER:
                case LexicalUnit.SAC_MILLIMETER:
                case LexicalUnit.SAC_INCH:
                case LexicalUnit.SAC_POINT:
                case LexicalUnit.SAC_PICA:
                case LexicalUnit.SAC_PERCENTAGE:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_OPERATOR_COMMA:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_INTEGER:
                    if (lu.getIntegerValue() != 0) {
                        break predefined;
                    }
                    lu = lu.getNextLexicalUnit();
                    break;
                case LexicalUnit.SAC_IDENT:
                    if (!lu.getStringValue().equalsIgnoreCase("auto")) {
                        break predefined;
                    }
                    lu = lu.getNextLexicalUnit();
                    break;
                case LexicalUnit.SAC_EM:
                case LexicalUnit.SAC_EX:
                case LexicalUnit.SAC_PIXEL:
                case LexicalUnit.SAC_CENTIMETER:
                case LexicalUnit.SAC_MILLIMETER:
                case LexicalUnit.SAC_INCH:
                case LexicalUnit.SAC_POINT:
                case LexicalUnit.SAC_PICA:
                case LexicalUnit.SAC_PERCENTAGE:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_OPERATOR_COMMA:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_INTEGER:
                    if (lu.getIntegerValue() != 0) {
                        break predefined;
                    }
                    lu = lu.getNextLexicalUnit();
                    break;
                case LexicalUnit.SAC_IDENT:
                    if (!lu.getStringValue().equalsIgnoreCase("auto")) {
                        break predefined;
                    }
                    lu = lu.getNextLexicalUnit();
                    break;
                case LexicalUnit.SAC_EM:
                case LexicalUnit.SAC_EX:
                case LexicalUnit.SAC_PIXEL:
                case LexicalUnit.SAC_CENTIMETER:
                case LexicalUnit.SAC_MILLIMETER:
                case LexicalUnit.SAC_INCH:
                case LexicalUnit.SAC_POINT:
                case LexicalUnit.SAC_PICA:
                case LexicalUnit.SAC_PERCENTAGE:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu != null) {
                    break;
                }
                return CSSLexicalUnit.createPredefinedFunction
                    (LexicalUnit.SAC_RECT_FUNCTION, params, prev);
            }
            break;
        case 'c':
        case 'C':
            if (name.equalsIgnoreCase("counter")) {
                lu = params;
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_IDENT:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_OPERATOR_COMMA:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_IDENT:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu != null) {
                    break;
                }
                return CSSLexicalUnit.createPredefinedFunction
                    (LexicalUnit.SAC_COUNTER_FUNCTION, params, prev);
            } else if (name.equalsIgnoreCase("counters")) {
                lu = params;
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_IDENT:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_OPERATOR_COMMA:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_STRING_VALUE:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_OPERATOR_COMMA:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_IDENT:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu != null) {
                    break;
                }
                return CSSLexicalUnit.createPredefinedFunction
                    (LexicalUnit.SAC_COUNTERS_FUNCTION, params, prev);
            }
            break;
        case 'a':
        case 'A':
            if (name.equalsIgnoreCase("attr")) {
                lu = params;
                if (lu == null) {
                    break;
                }
                switch (lu.getLexicalUnitType()) {
                default:
                    break predefined;
                case LexicalUnit.SAC_IDENT:
                    lu = lu.getNextLexicalUnit();
                }
                if (lu != null) {
                    break;
                }
                return CSSLexicalUnit.createString

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     * Converts a hash unit to a RGB color.
     */
    protected LexicalUnit hexcolor(LexicalUnit prev) {
        String val = scanner.getStringValue();
        int len = val.length();
        LexicalUnit params = null;
        switch (len) {
        case 3:
            char rc = Character.toLowerCase(val.charAt(0));
            char gc = Character.toLowerCase(val.charAt(1));
            char bc = Character.toLowerCase(val.charAt(2));
            if (!ScannerUtilities.isCSSHexadecimalCharacter(rc) ||
                !ScannerUtilities.isCSSHexadecimalCharacter(gc) ||
                !ScannerUtilities.isCSSHexadecimalCharacter(bc)) {
                throw createCSSParseException("rgb.color", new Object[] { val });
            }
            int t;
            int r = t = (rc >= '0' && rc <= '9') ? rc - '0' : rc - 'a' + 10;
            t <<= 4;
            r |= t;
            int g = t = (gc >= '0' && gc <= '9') ? gc - '0' : gc - 'a' + 10;
            t <<= 4;
            g |= t;
            int b = t = (bc >= '0' && bc <= '9') ? bc - '0' : bc - 'a' + 10;
            t <<= 4;
            b |= t;
            params = CSSLexicalUnit.createInteger(r, null);
            LexicalUnit tmp;
            tmp = CSSLexicalUnit.createSimple(LexicalUnit.SAC_OPERATOR_COMMA, params);
            tmp = CSSLexicalUnit.createInteger(g, tmp);
            tmp = CSSLexicalUnit.createSimple(LexicalUnit.SAC_OPERATOR_COMMA, tmp);
            tmp = CSSLexicalUnit.createInteger(b, tmp);
            break;

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            } else if (s == CSS_NONE_VALUE) {
                return NONE_VALUE;
            }
            return super.createValue(lu);
        case LexicalUnit.SAC_RGBCOLOR:
            LexicalUnit l = lu.getParameters();
            ValueFactory ph = new ColorComponentFactory(getParser());
            CSSPrimitiveValue r = new CSSOMValue(ph, createColorValue(l));
            l = l.getNextLexicalUnit().getNextLexicalUnit();
            CSSPrimitiveValue g = new CSSOMValue(ph, createColorValue(l));
            l = l.getNextLexicalUnit().getNextLexicalUnit();
            CSSPrimitiveValue b = new CSSOMValue(ph, createColorValue(l));
            lu = lu.getNextLexicalUnit();
            if (lu == null) {
                return new ImmutableRGBColor(r, g, b);
            }
            if (lu.getLexicalUnitType() != LexicalUnit.SAC_FUNCTION) {
                throw CSSDOMExceptionFactory.createDOMException
                    (DOMException.INVALID_ACCESS_ERR,
                     "invalid.lexical.unit",
                     new Object[] { new Integer(lu.getLexicalUnitType()),
                                    getPropertyName() });
            }
            if (!lu.getFunctionName().toLowerCase().equals("icc-color")) {
                throw CSSDOMExceptionFactory.createDOMException
                    (DOMException.INVALID_ACCESS_ERR,
                     "invalid.lexical.unit",
                     new Object[] { new Integer(lu.getLexicalUnitType()),
                                    getPropertyName() });
            }
            lu = lu.getParameters();
            if (lu.getLexicalUnitType() != LexicalUnit.SAC_IDENT) {
                throw CSSDOMExceptionFactory.createDOMException
                    (DOMException.INVALID_ACCESS_ERR,
                     "invalid.lexical.unit",
                     new Object[] { new Integer(lu.getLexicalUnitType()),
                                    getPropertyName() });
            }
            String cp = lu.getStringValue();
            lu = lu.getNextLexicalUnit();
            SVGCSSNumberList nl = new SVGCSSNumberList();
            while (lu != null) {
                lu = lu.getNextLexicalUnit();
                if (lu == null) {
                    throw CSSDOMExceptionFactory.createDOMException
                        (DOMException.INVALID_ACCESS_ERR,
                         "invalid.lexical.unit",
                         new Object[] { new Integer(0), getPropertyName() });
                }
                nl.appendItem(new SVGCSSNumber(getColorValue(lu)));
                lu = lu.getNextLexicalUnit();
            }
            return new ImmutableSVGPaintValue
                (SVGPaint.SVG_PAINTTYPE_RGBCOLOR_ICCCOLOR,
                 r, g, b, cp, nl, null);


        case LexicalUnit.SAC_URI:
            String uri = lu.getStringValue();
            lu = lu.getNextLexicalUnit();
            if (lu == null) {
                return new ImmutableString(CSSPrimitiveValue.CSS_URI, uri);
            }


            switch (lu.getLexicalUnitType()) {
            case LexicalUnit.SAC_RGBCOLOR:
                l = lu.getParameters();
                ph = new ColorComponentFactory(getParser());
                r = new CSSOMValue(ph, createColorValue(l));
                l = l.getNextLexicalUnit().getNextLexicalUnit();
                g = new CSSOMValue(ph, createColorValue(l));
                l = l.getNextLexicalUnit().getNextLexicalUnit();
                b = new CSSOMValue(ph, createColorValue(l));
                lu = lu.getNextLexicalUnit();
                if (lu == null) {
                    return new ImmutableSVGPaintValue
                        (SVGPaint.SVG_PAINTTYPE_URI_RGBCOLOR,

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            if (s == CSS_CURRENTCOLOR_VALUE) {
                return CURRENTCOLOR_VALUE;
            }
            return super.createValue(lu);
        case LexicalUnit.SAC_RGBCOLOR:
            LexicalUnit l = lu.getParameters();
            ValueFactory ph = new ColorComponentFactory(getParser());
            CSSPrimitiveValue r = new CSSOMValue(ph, createColorValue(l));
            l = l.getNextLexicalUnit().getNextLexicalUnit();
            CSSPrimitiveValue g = new CSSOMValue(ph, createColorValue(l));
            l = l.getNextLexicalUnit().getNextLexicalUnit();
            CSSPrimitiveValue b = new CSSOMValue(ph, createColorValue(l));
            lu = lu.getNextLexicalUnit();
            if (lu == null) {
                return new ImmutableRGBColor(r, g, b);
            }

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                (formatMessage("unknown.attribute",
                               new Object[] { ns, ln }),
                 -1, -1);
        }
        try {
            LexicalUnit lu = parser.parsePropertyValue(new InputSource(r));
            return f.createCSSValue(lu);
        } catch (Exception e) {
            e.printStackTrace();
            throw new ParseException
                (formatMessage("parser.exception",

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                for (int i = 0; i < len; i++) {
                    Node attr = attrs.item(i);
                    String an = attr.getNodeName();
                    if (nonCSSPresentationalHints.contains(an)) {
                        try {
                            LexicalUnit lu;
                            int idx = getPropertyIndex(an);
                            lu = parser.parsePropertyValue
                                (attr.getNodeValue());
                            ValueManager vm = valueManagers[idx];
                            Value v = vm.createValue(lu, this);

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    public void setMainProperties
        (CSSStylableElement elt, final MainPropertyReceiver dst,
         String pname, String value, boolean important){
        try {
            element = elt;
            LexicalUnit lu = parser.parsePropertyValue(value);
            ShorthandManager.PropertyHandler ph =
                new ShorthandManager.PropertyHandler() {
                    public void property(String pname, LexicalUnit lu,
                                         boolean important) {
                        int idx = getPropertyIndex(pname);

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